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ELEKTROLISIS & HUKUM FARADAY

Quiz
•
English
•
1st Grade
•
Medium
Used 125+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
C(s) + O2(g) → CO2(g)
K+(aq) + e → K(s)
2Cl-(l) + 2e →Cl2(l)
4OH−(aq) → 2H2O(l) + O2(g) + 4e
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Proses elektrolisis lelehan NaCl dengan elektroda karbon digunakan arus sebesar 5 ampere selama 30 menit. Massa logam natrium yang diperoleh adalah .... (Ar Na = 23, Cl = 35,5)
2,14 gram
5,25 gram
3,95 gram
4,52 gram
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berapakah massa tembaga yang diendapkan di katode pada elektrolisis larutan
CuSO4 dengan menggunakan arus 3 A selama 20 menit. (Ar Cu = 63,5 g/mol)
1,79 gram
0,79 gran
1,18 gram
9,71 gram
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika 2 buah sel elektrolisis yang masing-masing mengandung elektrolit AgNO3 dan CuSO4 disusun seri dengan menggunakan arus yang sama, dihasilkan 2,5 g Ag. Berapakah massa Cu yang diperoleh? (Ar Cu= 63,5 g/mol, Ar Ag = 108 g/mol)
7,23 gran
5,45 gram
0,73 gram
1,37 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dari data potensial elektrode standar berikut:
Cu2+ + 2e → Cu E° = 0,3 V
Ag+ + e → Ag E° = 0,80 V
maka reaksi :
Cu2+ + 2Ag+ → Cu2+ + 2Ag
memiliki potensial sel...
+ 0,46 volt
- 0,46 volt
+ 1,46 volt
-1,46 volt
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Mg | Mg2+ || Al | Al3+
Al3+ | Al || Mg2+ | Mg
Al | Al3+ || Mg2+ | Mg
Mg | Mg2+ || Al3+ | Al
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
-0,72 volt
+0,72 volt
-1,72 volt
+1,72 volt
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